Programme for International Student Assessment, Computer-Based Assessment 2012

Albania, United Arab Emirates, Argentina...and 60 more, 2012

Reference ID

WLD_2012_PISA-CBA_v01_M

Producer(s)

Organisation for Economic Co-operation and Development

Metadata

Documentation in PDF DDI/XML JSON

Created on

Sep 05, 2014

Last modified

Jun 14, 2022

Page views

79396

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READ - P2009 Sleep Q10A (PR404Q10A)

Data file: CBA_COG12_MAR31

Overview

Valid: 65452

Invalid: 205871

Type: Discrete

Start: 156

End: 156

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
0	No credit	29028	44.4%
1	Full credit	35304	53.9%
r	Not reached	1120	1.7%
7	N/A	190354
9	Missing	15517

Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.

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